Hydroponic pot with a root prune window

ABSTRACT

The present invention provides an apparatus ( 100 ) for hydroponic cultivation of plants with a root retaining mechanism for preventing primary roots from traveling from a growing chamber ( 101 ) into a nutrient solution reservoir ( 102 ). The combined features of the root retaining mechanism and a root prune window ( 108 ) provide a high capacity for the plant to reach its maximum potentials.

TECHNICAL FIELD

This invention relates to hydroponic cultivation of plants using anirrigation system. More particularly, the invention relates to animproved hydroponic apparatus providing an aerated solution to the rootsof plants grown hydroponically therein.

BACKGROUND ART

Hydroponics, simply stated, is the growing of plants without soil.Hydroponic cultivation of plants involves inert root growth mediumswithout microbial activity. The solution is principally water withfertilizers and other nutrients added. Scientists have discovered thatten elements are generally required for plant growth. Three of these tenare provided by air and water: carbon (C), hydrogen (H) and oxygen (O).The others, nitrogen (N), phosphorus (P), potassium (K), calcium (Ca),magnesium (Mg), sulfur (S) and iron (Fe) were obtained by plants fromthe soil or other growing medium. Six additional elements have beendetermined essential for plant growth: manganese (Mn), zinc (Zn), copper(Cu), boron (B), molybdenum (Mb) and chlorine (Cl). Currently acceptedorganic fertilizer components are dependent upon organisms in the soilto convert the “organic” materials into a useable form for plants. Inhydroponics, because the minerals required for plant growth areprovided, the need for soil and soil organisms are completelyeliminated. The result is much higher growth rates and yields, andbetter crop quality than organic methods can achieve.

FIG. 1 is a schematic diagram illustrating a hydroponic pot representingthe current state of art. A growing chamber 10 filled with growingmedium 11 sits in a nutrient reservoir 12. A pumping column 13 fits intoa pumping pipe 14, reaching into the nutrient solution contained in thereservoir 12. Air pressure from the air pump 15 pushes the solution upthrough the pumping column 13 to the drip ring 16 with a number of dripholes. The drip ring 16 is connected to the column with a tee connector.Solution drains to a drain/level tube 17, which is inserted through arubber grommet at the bottom of the reservoir 12.

The growing chamber 10 is a shallow pot with perforated bottom. Theholes in the bottom of the growing chamber 10 are in three sizes—large,medium and small ones, all evenly spread. The small holes are fordraining the solution oozed through the growing medium 11. The mediumand large holes are primarily for the roots to grow through into thereservoir 12.

This apparatus has many problems in use. First, the premise of thismethodology is a failed premise because the roots submerged in an oxygendeprived nutrient solution reservoir soon drown.

Second, because the drain holes are spread all over the growing chambersbottom the primary roots are evacuated into the reservoir. Saturation ofunpruned roots in the reservoir clogs the pumping column 13. A biweeklydisassembly is required to remedy this design flaw.

Third, to prevent the roots from entering the reservoir they must bepruned. This involves the cumbersome task of removing the whole growingchamber 10 off the reservoir 12. In addition, upon pruning of theprimary roots the plant is left dependent upon secondary roots only.This further limits the plant's growth capacity.

Fourth, the nutrient solution is not oxygen enriched. This results in aslower rate of metabolism. It is established that at 72° F., O₂ and H₂Obecome H₂O₂. The metabolic rate increases when a plant uptakes the waterwith a molecule of oxygen.

Fifth, the nutrient solution temperature is not stable and is affectedby environmental influences such as outside at night, as the solutiontemperature fluctuates so does the metabolic rate. This singleinstability can shock a sensitive plant and stunt its growth.

Sixth, due to the design of the drain level tube 17, weekly solutiondrain and rinse is inconvenient, the entire device must be lifted in theair as the drain tube is at the bottom of the reservoir.

Seven, the nutrient drip ring 16, is a single ring with minimal dripholes exposing perhaps 10% of the root mass to nutrient. The designdepends primarily upon roots entering the reservoir for nutrients.

Taken altogether, the above described is at best a nominally successfulmethodology. The device works fine until the roots enter the reservoir.The plant is then forced into premature catabolic activity.

It is therefore an object of the present invention to solve theseproblems by providing an apparatus for hydroponic cultivation of plantsthat provides a high capacity for the plant to reach its maximumpotentials.

SUMMARY OF THE INVENTION

The present invention provides an apparatus for hydroponic cultivationof plants with a root retaining mechanism for preventing primary rootsfrom traveling from a growing chamber into a pot reservoir. The combinedfeatures of the root retaining mechanism and a root prune window providea high capacity for the plant to reach its maximum potentials.

In one preferred embodiment of the invention, the hydroponic potcomprises:

-   -   a first cylindrical container for keeping a growing medium, the        first cylindrical container having a surrounding wall and a        bottom with a number of holes which evenly spread in a central        area of the bottom;    -   a second cylindrical container as a reservoir of nutrient        solution, the second cylindrical container being coupled to, and        positioned under, the first cylindrical container, and the        second cylindrical container having a window from which a user        observes and prunes a plant's roots extending downward into said        reservoir through the small round holes, the window's upper edge        being as close as possible to the bottom's lower surface; and    -   an irrigation system to pump nutrient solution from the        reservoir upward into the growing medium.

In another preferred embodiment, the hydroponic pot comprises:

-   -   a cylindrical tank which is divided by a divider into an upper        portion as a growing chamber which is filled with a growing        medium, and a lower portion as a reservoir of nutrient solution;        and    -   a pump which pumps nutrient solution from the reservoir upward        into the growing medium through a drip irrigation base;    -   wherein the divider is a round member that fits into the tank,        acting as the growing chamber's bottom to support the growing        medium, the round member having a smooth upper surface and a        number of holes which evenly spread in a central area of the        round member; and    -   wherein the reservoir has a window from which a user observes        and prunes a plant's roots extending downward into the reservoir        through the holes of the divider, the window's upper edge being        as close as possible to the divider's lower surface.

In both of the embodiments, the hydroponic pot may further comprises thefollowing components:

-   -   a submersible heater which is used to adjust the temperature of        nutrient solution in the nutrient reservoir;    -   an aeration device, such as an aeration stone coupled to an air        pump, to aerate the nutrient solution in the nutrient reservoir;    -   a programmable controller to control aeration and temperature of        the nutrient solution as well as the humidity of the growing        medium;    -   a drainage which is used to empty the reservoir;    -   a trestle coupled to the pot's upper edge;    -   a lighting device coupled to the trestle to promote        photosynthesis; and/or    -   a power interruption device to ensure that the power is        automatically shut off when a short circuit occurs.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram illustrating a hydroponic pot according tothe prior art;

FIG. 2 is a schematic, sectional view diagram of an improved hydroponicpot with a root prune window according to one preferred embodiment ofthe invention;

FIG. 3 is a schematic, top view diagram of an exemplary drip irrigationbase with a grid of drip holes, which is placed at the top of thegrowing medium;

FIG. 4 is a schematic, partially sectional view diagram of thehydroponic pot illustrating an exemplary framework of the nutrientpumping conduits;

FIG. 5 is a schematic diagram of an exemplary design of the primarypot's bottom having a number of drain holes, locating in the centralarea of the bottom;

FIG. 6 is a front view diagram of the tank of an improved hydroponic potwith a root prune window according to another preferred embodimentrepresenting the best mode for carrying out the invention;

FIG. 6A is a sectional view diagram illustrating the upper edge of thewindow and a notch used to hold the sliding door from falling;

FIG. 6B is a sectional view illustrating the lower edge of the windowand a notch used to hold the sliding door from falling;

FIG. 6C is a bottom view diagram further illustrating the window edges;

FIG. 6D is a sectional view diagram illustrating a track which enablesthe sliding door slide from right to left or from left to right;

FIGS. 7A-C illustrate the front view, side view, and top view of thesliding door respectively;

FIG. 8A is a top view diagram of a divider which is used to divide thetank into an upper portion as a growing chamber and a lower portion as areservoir;

FIG. 8B is a side view of a divider which has a flat top surface;

FIG. 9A and FIG. 9B are top view and side view diagrams respectively,illustrating a divider, whose central area is slightly higher than itssurrounding area so that the primary roots are encouraged to grow towardthe surrounding wall of the tank;

FIG. 10 is a sectional view diagram of an irrigation base with one inputconduit connected to a number of circular conduits with a number of dripholes; and

FIGS. 11A-B illustrate a trestle which includes a ring-shape base andseven rods coupled to the ring-shape base.

DISCLOSURE OF THE INVENTION

The present invention provides an apparatus for hydroponic cultivationof plants. The approaches according to this invention have solved theproblems of root saturation in a reservoir by a unique control mechanismfor preventing primary roots from traveling from a growing chamber intoa nutrient reservoir. The combined feature of a root retaining systemand a root prune window provides a high capacity for the plant to reachits maximum potentials.

FIG. 2 is a schematic, sectional view diagram of an improved hydroponicpot 100 according to one preferred embodiment of the invention. Thehydroponic pot includes a primary pot 101 as a growing chamber where agrowing medium is kept and a plant is cultivated, a pot reservoir 102 ofnutrient solution with a root prune window 108, a drainage 103 which isused to empty the reservoir 102, an electrical submersible pump 105which is used to pump the nutrient solution to an irrigation base, and aparts kit 109. The submersible pump 105 is oil-less to prevent anypossibility of contamination.

The primary pot 101 is filled with a non-soil growing medium which canbe peat moss, coco fiber, little round lava rocks, baked clay pebbles orrockwool. The coating on the growing medium holds moisture and air thatare useful in promotion of the plant's metabolism. To keep the humidityin the growing chamber, the top of the primary pot may be wrapped withsaran or other material.

Plants have two types of roots, water roots and air roots. Roots growingmediums are designed for one or the other, not for the both. Therefore,a combination of mediums is required. Water roots that prefer the lowerregion of the pot are given a rockwool mat while the air roots whichprefer the upper region of the pot are given clay pebbles or lava rocks.The success of this strategy is physically evident upon removal of theplant at the end of its lifecycle.

The primary pot 101 is a standard five-gallon round pot that sits abovea five-gallon reservoir 102. The primary pot 101 can be convenientlyremoved from the reservoir 102. The primary pot and the reservoir inpair can be in any shape such as square or oval, and any size acceptablein the industry, such as one-one gallon pots, three-three gallon pots,or ten-ten gallon pots.

The root prune window 108 on the pot reservoir 102 is for theconvenience of observing and pruning the secondary roots without a needto move the primary pot 101 from the reservoir 102. The window 108 is asclose as possible to the primary pot's bottom. It can be opened andclosed using a door such as a sliding door. It is opened when a userneed to observe and prune the plant's roots. It is usually closed forkeeping the inside humidity and temperature best for the plant'smetabolism. It may be in any shape, such as oval or square. In addition,it is preferably non-transparent for preventing the roots from light.After the roots have saturated the pot, they make their way toward andout the nutrient drain holes where they are easily pruned via thewindow. The result is that the life expectancy of the plant is now madeindefinite. This is important for outdoor applications where the growingseason is six months or longer.

The hydroponic pot 100 further comprises a submersible heater 104, whichis used to adjust the temperature of the solution in the reservoir 102.The heater 104 may be a 50-watt aquarium heater. It is electricallyconnected to the power by plugging in the plug to the plug strip 109.The heater 104 may be controlled by an on-or-off switch or by aprogrammable controller. Experiments indicate that the metabolic rate isgoverned primarily by temperature. Maintaining a nutrient solutiontemperature of 72° F. contributes significantly to increases inmetabolic rate. 72° F. is also the optimum temperature for themechanical bonding of H₂O and O₂ molecules. This process of H₂O₂ acts asa compounding factor to further effect increases in metabolic rate; anutrient solution heater and air pump provide optimum support for thisprocess. Enhanced metabolism allows the plant to perform to its fullest.Stabilization of root zone temperature, via maintenance of nutrientsolution temperature, insulates the plant against environmental stressessuch as outdoors at night. Tests conducted on outdoor tomato plants havedemonstrated that this stabilization contributes to longer daily cyclesof plant respiration, i.e. the processing of CO₂.

The hydroponic pot 100 further comprises an aeration stone 106, which isplaced in the nutrient solution and is operatively coupled to an airpump 107 which is used to aerate the water to maximize the H₂O₂ processdescribed above. For the connection between the stone 106 and the airpump 107, a simple plug or an on-or-off switch may be used.Alternatively, a programmable control may be used to control the airpump.

Experiments indicate that vigorous growth, or even survival of theplants requires that the roots be provided with an oxygen-enrichedsolution and kept within a proper environment. By infusing air into thenutrient solution, the solution is oxygen-enriched, and thus the rootsabsorb optimal levels of both oxygen and nutrients. This facilitatesrapid growth resulting in optimum yields.

The parts kit 109 may be a plug strip, or a combination of switches or aprogrammable controller. It may include a breaker that pops and shutsoff the power when any of the electrical items is short-circuited forany reason. It may also include a reset button used to return the powerwhen the short-circuit problem is solved. It may further include otherauxiliary items such as signal lights, or temperature, pH level andnutrient concentration indicators.

FIG. 3 is a schematic, top view diagram of an exemplary drip irrigationbase 200, which is placed at the top of the growing medium. Theirrigation base 200 includes a number of circular pipes 201 connected tothe pump conduits, each pipe having a number of small drip holes 202facing upward, constituting a full coverage drip irrigation grid whichprovides constant nutrient to the plant.

FIG. 4 is a schematic, partially sectional view diagram of thehydroponic pot 100 illustrating an exemplary framework of nutrientpumping conduit 205. Also referring to FIG. 2 and FIG. 3, the pump 105is used to pump the nutrients from the reservoir 102 to the irrigationbase 200. The nutrients drip from the drip holes 202, go through thegrowing medium, and then descend through the drain holes 110, into thereservoir 102. The drainage 103 includes a pipe 203 coupled to the pump105 and a little cap 204. When the little cap 204 is taken off, thepressure of the upper portion of the irrigation system decreases andthus the pump 105 may have the reservoir drained so that new nutrientsmay be added.

FIG. 5 is a simplified bottom view diagram of the primary pot 101illustrating the nutrient drain holes 110 which represent aroot-retaining system. Nutrient drain holes 110 evenly spread in thecentral area of the primary pot's bottom, thereby, encouraging theprimary roots to elongate along the primary pot's surrounding wall.Preferably, the central area of the bottom is slightly higher, with asmooth slope, than the surrounding area. The slight upgrade for thedrain holes is also a slight downgrade for the roots, which leads theroots away from the center of the primary pot's bottom. Thisroot-retaining system ensures large root mass that translates into largeplants. Furthermore, the plant reads the lengthy forty-eight inchesinside circumstance of the pot as a less limiting environment, whichfurther contributes to the potential of plant growth. In a typicalembodiment, the central area's diameter is approximately {fraction(1/3)} of the diameter of the primary pot's bottom. Alternatively, thedrain holes can be unevenly spread. For a 5-5 gallon pot, theroot-retaining system may have twelve to twenty-four evenly spread drainholes. Each of such drain holes may be approximately {fraction (5/16)}to ⅜ inch big in diameter. The drain holes may be in any shape, such astriangular or square, although they are not as practical as the roundholes.

With the growing of the plant cultivated in the hydroponic pot, itsprimary roots come out and grow toward the surrounding wall of thegrowing chamber, i.e., the primary pot 101. When the primary roots hitthe wall, they go around the pot to grow further. Because the drainholes are limited in the central area of the pot's bottom, the primaryroots grow around the pot. In other words, they do not go straightthrough the drain holes into the reservoir 102. It takes a relativelylong time for the primary roots to reach the central area where thenutrient drain holes 110 are located. At this time the roots begin toextrude through the drain holes 110 and are then pruned via the rootprune window 108. The plant roots quickly understand that they must seekan alternative route and extrusions diminish. In this system, the planthas sufficient time and space to grow its primary roots and thereforecan reach its maximum potentials.

The hydroponic pot may further include a trestle to support severalplants. The trestle includes a number of straight rods coupled to aring-shape base that is mechanically connected to the upper portion ofthe pot. The ring-shape base also functions as a cover of the growingmedium to maintain the humidity inside the growing chamber. Preferably,the ring-shape base covers approximately one-third to one-half of theupper surface of the growing chamber.

FIG. 6 is a front view diagram of the tank 300 of an improved hydroponicpot according to another preferred embodiment representing the best modefor carrying out the invention. In this embodiment, hydroponic pot hasonly one container, i.e., the tank 300, which is divided into twoportions by a divider 303. The upper portion 301 is used as a growingchamber, and the lower portion 302 as a nutrient reservoir. The lowerportion has a root prune window 304, which is open and closed by asliding door operatively coupled to the tank 300. FIG. 6A is a sectionalview diagram illustrating the upper edge 305 of the window 304 and anotch used to hold the sliding door from falling. FIG. 6B is a sectionalview illustrating the lower edge 306 of the window 304 and a notch usedto hold the sliding door from falling. FIG. 6C is a bottom view diagramfurther illustrating the window edges 305, 306. FIG. 6D is a sectionalview diagram illustrating a track 307 which enables the sliding doorslide from right to left or from left to right. FIG. 7A, FIG. 7B, andFIG. 7C illustrate the front view, side view, and top view of a slidingdoor 308 respectively.

FIG. 8A is a top view diagram of a divider that is used to divide thetank 300 into the upper portion 301 as a growing chamber and the lowerportion 302 as a reservoir. The divider has twenty-four drain holes 401evenly spread in the central area. The top surface of the divider, i.e.,the surface touching the growing medium is smooth. The bottom of thedivider has a number of radial and circular ridges 402 to strengthen thedivider. FIG. 8B is a side view of a divider that has flat top surface.

FIG. 9A and FIG. 9B illustrate a divider representing the most preferredmode. The central area 403 of the divider's top surface is slightlyhigher, with a smooth slope, than its surrounding area so that theprimary roots are encouraged to grow toward the surrounding wall of thetank 300.

FIG. 10 is a sectional view diagram of an irrigation base 500 with oneinput conduit 501 connected to a number of circular conduits 502 withdrip holes 503.

In a typical embodiment, the circular conduits can be removed andreplaced. In another embodiment, the entire irrigation base 500 ismolded.

FIG. 11A is a top view diagram of a trestle that includes a ring-shapebase 601 and seven rods coupled to the ring-shape base. The rods areevenly spread, pointing at the tangent direction. As FIG. 11B shows,each rod 602 keeps a 370 angle with the base surface. The trestle mayfurther include a web stretched by the top ends of the rods. The trestleis designed to (1) represent the several plants that the apparatus iscapable of supporting, and (2) finish the plant out in the Maximum LumenZone on indoor applications.

The apparatus may further comprise a lighting device coupled to thetrestle to promote photosynthesis. The lighting device may be a regularbulb, but preferably a 1000 waft vertical HPS with 4 feet parabolichood.

The aeration device, the heating device, the nutrient pump device, thedrainage, the drip irrigation base, the trestle, as well as the lightingdevice described above are equally applicable both to the firstpreferred embodiment illustrated by FIGS. 2-5 and to the secondpreferred embodiment illustrated by FIGS. 6-11.

Table 1 below illustrated the suggested values for the best performanceof the hydroponic apparatus. TABLE 1 Suggested Values Light 1000 wattVertical HPS with 4 ft Parabolic Hood Nutrient 1000 ppm, hydroponicnutrient only, pH 6.4 CO₂ 1000 ppm to start, progress incrementally to2000 ppm Temperature Light Period, 80-85° F.; Dark period, 75-80° F.Algae 2-3 ml of 35% aqueous solution Hydrogen Peroxide (food grade)every 48 hrs Rinse Weekly, dark period only

The apparatus described above can be used in a greenhouse, on a patio ordeck and indoors under lights. It is energy efficient and lowmaintenance. It can work as a stand-alone unit or as an integrated chainof growers operatively connected to each other with a common reservoir.

Although the invention is described herein with reference to thepreferred embodiments, one skilled in the art will readily appreciatethat other applications may be substituted for those set forth hereinwithout departing from the spirit and scope of the present invention.

Accordingly, the invention should only be limited by the claims includedbelow.

1. A hydroponic apparatus comprising: a first cylindrical container forkeeping a growing medium, said first cylindrical container having asurrounding wall and a bottom with a number of vertical holes whichevenly spread in a central area of said bottom; a second cylindricalcontainer as a reservoir of nutrient solution, said second cylindricalcontainer being coupled to, and positioned under, said first cylindricalcontainer, and said second cylindrical container having a window fromwhich a user observes and prunes a plant's roots which grow downwardinto said reservoir through said vertical holes, said window's upperedge being as close as possible to said bottom's lower surface; and anirrigation system to pump nutrient solution from said reservoir upwardinto said growing medium.
 2. The hydroponic apparatus of claim 1,further comprising: a submersible heater which is used to adjust thetemperature of nutrient solution in said reservoir.
 3. The hydroponicapparatus of claim 1, further comprising: an aeration device to aeratenutrient solution in said reservoir.
 4. The hydroponic apparatus ofclaim 3, wherein said aeration device comprises an aeration stoneoperatively coupled to an air pump.
 5. The hydroponic apparatus of claim1, further comprising a programmable controller to control any of:aeration of nutrient solution in said reservoir; temperature of nutrientsolution in said reservoir; and moisture of said growing medium.
 6. Thehydroponic apparatus of claim 1, wherein said irrigation system iscoupled to an irrigation base which provides an array of drip holesfacing upward from which nutrient solution evenly covers said growingmedium.
 7. The hydroponic apparatus of claim 6, wherein said irrigationbase comprises one input conduit connected to at least two circularconduits on which various drip holes facing upward are evenly made. 8.The hydroponic apparatus of claim 1, wherein said growing medium can beany of: peat moss; coco fiber; lava rocks; clay pebbles; and rockwool.9. The hydroponic apparatus of claim 1, wherein each of said verticalholes is approximately {fraction (5/16)}-{fraction (3/8)} inch indiameter.
 10. The hydroponic apparatus of claim 1, wherein said centralarea is an area whose diameter is approximately one-third of saidbottom's diameter.
 11. The hydroponic apparatus of claim 1, wherein saidcentral area is slightly higher, with a smooth slope, than thesurrounding area of said bottom to lead a plant's primary roots to growtoward the surrounding wall of said first cylindrical container.
 12. Thehydroponic apparatus of claim 1, wherein said window is opened andclosed using a sliding door.
 13. The hydroponic apparatus of claim 1,wherein said irrigation system comprises a drainage that is used toempty said reservoir.
 14. The hydroponic apparatus of claim 1, furthercomprising a trestle coupled to said first cylindrical container's upperedge, said trestle comprising: a connection agency for connection withsaid first cylindrical container; and a number of rods with a samelength, the lower ends of said rods being coupled to said connectionagency.
 15. The hydroponic apparatus of claim 14, wherein said trestlefurther comprises a web stretched by the upper ends of said rods. 16.The hydroponic apparatus of claim 14, wherein said connection agencycovers, around said first cylindrical container's upper rim,approximately one-third to one-half of the top surface of said firstcylindrical container to keep a particular humidity of said growingmedium.
 17. The hydroponic apparatus of claim 1, further comprising alighting device coupled to said trestle to promote photosynthesis. 18.The hydroponic apparatus of claim 1, further comprising: a powerinterruption device to ensure that the power is automatically shut offwhen a short circuit occurs; and a reset device used to return the powerafter said short circuit is overcome.
 19. A hydroponic apparatuscomprising: a cylindrical tank which is divided by a divider into anupper portion as a growing chamber which is filled with a growingmedium, and a lower portion as a reservoir of nutrient solution; and apump which pumps nutrient solution from said reservoir upward into saidgrowing medium through a conduit coupled to a drip irrigation baseplaced at the top of said growing medium; wherein said divider is around member that fits into said tank, acting as a bottom of saidgrowing chamber to support said growing medium, said round member havinga smooth upper surface and a number of vertical round holes which evenlyspread in a central area of said member; and wherein said reservoir hasa window from which a user observes and prunes a plant's roots whichelongate downward into said reservoir through said vertical round holes,said window's upper edge being as close as possible to said divider'slower surface.
 20. The hydroponic apparatus of claim 19, furthercomprising: a submersible heater which is used to adjust the temperatureof nutrient solution in said reservoir.
 21. The hydroponic apparatus ofclaim 19, further comprising: an aeration device to aerate nutrientsolution in said reservoir.
 22. The hydroponic apparatus of claim 21,wherein said aeration device comprises an aeration stone operativelycoupled to an air pump.
 23. The hydroponic apparatus of claim 19,further comprising a programmable controller to control any of: aerationof nutrient fluid in said reservoir; temperature of nutrient fluid insaid reservoir; and moisture of said growing medium.
 24. The hydroponicapparatus of claim 19, wherein said drip irrigation base provides anarray of drip holes facing upward from which nutrient solution evenlycovers said growing medium.
 25. The hydroponic apparatus of claim 19,wherein said drip irrigation base comprises one input conduit connectedto at least two circular conduits on which various drip holes facingupward are evenly made.
 26. The hydroponic apparatus of claim 19,wherein said growing medium can be any of: peat moss coco fiber; lavarocks; clay pebbles; and rockwool.
 27. The hydroponic apparatus of claim19, wherein each of said vertical round holes is approximately {fraction(5/16)}-⅜ inch in diameter.
 28. The hydroponic apparatus of claim 19,wherein said central area is an area whose diameter is approximatelyone-third of said divider's diameter.
 29. The hydroponic apparatus ofclaim 19, wherein said central area is slightly higher, with a smoothslope, than the surrounding area of said divider's upper surface to leada plant's primary roots to elongate toward the surrounding wall of saidgrowing chamber.
 30. The hydroponic apparatus of claim 19, wherein saidwindow is opened and closed using a sliding door.
 31. The hydroponicapparatus of claim 19, further comprising a drainage which is used toempty said reservoir.
 32. The hydroponic apparatus of claim 19, furthercomprising a trestle coupled to said tank's upper portion, said trestlecomprising: a connection agency for connection with said tank; and anumber of rods with a same length, the lower ends of said rods beingcoupled to said connection agency.
 33. The hydroponic apparatus of claim32, wherein said trestle further comprises a web stretched by the upperends of said rods.
 34. The hydroponic apparatus of claim 32, whereinsaid connection agency covers, around said tank's upper rim,approximately one-third to one-half of said tank's top surface to keep aparticular humidity of said growing medium.
 35. The hydroponic apparatusof claim 19, further comprising a lighting device coupled to saidtrestle to promote photosynthesis.
 36. The hydroponic apparatus of claim19, further comprising: a power interruption device to ensure that thepower is automatically shut off when a short circuit occurs; and a resetdevice used to return the power after said short circuit is overcome.